Loom



Dec. a 1925. 1.564.677

A. JOHN LOOII Filed June 3, 1925 Patented Dec. 8, 1925.

ALFRED JOHN, 013 GERA-REUSS, GERMANY.

LOOM.

Application filed June 3, 1925.

To all whom it may concern:

Be it known that I, Anrunn JOHN, a citizen of Germany, residing at Geralteuss, Germany, have invented certain new and useful Improvements in Looms, of which the following is a specification.

The present invention has reference to im provements in weaving looms and relates more particularly to looms for operating simultaneously on two pieces of fabric, extending one above the other or alongside of one another, and in which the two sets of warp threads are unwound from a common warp beam and the two individual finished webs are wound upon a common piece beam.

In order to make my invention more readily understood I will describe it in detail in connection with the accompanying drawing, in which Fig. 1 shows a diagram of the beam and warp thread arrangement; Fig. 2 shows in side elevation, partly in section, the means for relatively shifting the intermediate beam, and Figv 3 is a similar view of the means for similarly displacing the secondary breast beam.

The first warp 1, in full line, is extended in conventional manner from the warp beam 2 over the guide roll 3 and the breast beam & to the piece beam 5. The second warp 6, in dot and dash outline, is led from beam 2 over an intermediate relatively shiftable beam 7, over the roll 3 to a second breast beam 8 and then onto the piece beam The two beams 7 and 8 are to be relatively displaced in strict parallelism to the other beams and they are provided for the purpose of enabling the operator to bring either warp into the required relative operative position upon breaks of the shoot or the like. In case of a break the loom will con tinue to operate for a few beats and thus continue weaving the other, unaffected web. For instance, if the shoot of the warp 1 should break, it will be found that before the loom is stopped, the warp G will have been woven a few more shoots. In order to then correct the thus presented fault, it is necessary that the two shoot or weft threads of warps 1 and 6 are brought back into their normal superimposed position, for which purpose, then, the beams 2 and 5 are rotated in such manner that the warp 1 is retracted to a corresponding extent toward the beam 2. By this movement the warp 6, since it extends over the same warp beam and piece beam respectively, is also retracted in the Serial No. 34,603.

same sense and to the same extent, so that thus the last weft threads are not yet superimposed.

To bring this about the shiftable beams 7 and 8 are provided, and means are further provided for shifting the intermediate beam 7 toward the warp beam 2, and the second breast beam 8 in the opposite direction. In case of break occurring in the shoot of warp 6 the two beams 7 and 8 are to be rela tively shifted in a sense opposite to that indicated above.

The relative displacement of the beams 7 and 8 is conveniently caused by the mechanism shown in Figs. 2 and 3. By means of the handwheel 9 the worm 10 is rotated, which meshes with a worm wheel 11 carrying the bevel wheel 12. The latter meshes with the bevel wheel 13 fast on the screw spindle 1a which is suitably journaled in the loom frame and upon which threads the sleeve 15. in the latter is provided the hearing 1.6 for journaling the respective end of the shaft of the intermediate beam 7. Such spindle-actuating bearing sleeves are prefer ably provided for either shaft end to operate in unison, so that the beam is always displaced in parallelism to the other beams.

A similar arrangement is provided for the displacement of the second breast beam 8, a handwheel 17 being geared to the screw spindle 18, the threaded sleeve 19 of which serves as bearing at 20 to journal the shaft of the beam 8.

By means of the described instrumentalities all tensions or irregularities in the weaving operations can readily and effectively be compensated.

What I claim is:

1. in a loom mechanism of the character set forth for simultaneously turning out two individual webs, two separate warps, a warp beam and a piece beam, both common to said two warps, a guide roll, a breast beam, a beam intermediate said warp beam and said roll, and a second breast beam intermediate said roll and said piece beam, one of said warps running from said warp beam over said roll and said breast beam to said piece beam, and the respectively second warp running from said warp beam successively over said intermediate beam, said roll, said sec ond breast beam to said piece beam, and means for relatively parallelly shifting said intermediate beam and said second breast beam in respectively opposite sense.

Ill)

2. In a loom of the character set forth for simultaneously turning out two 1nd1- vldual Webs, tWo separate warps, a Warp beam and a piece beam, both common tobeam to the piece beam, and means for relatively parallelly shifting the intermediate and the second breast beams, comprising ior each beam manually operable gearing, a

spindle operable thereby, a sleeve positively traveling along said spindle, and means as sociated with said sleeve for journaling the shaft of the respective shiftablc beam, for displacing the two warps relative to one another.

In testimony whereof I ailix my signature.

ALFRED JOHN. 

